Brake shoe



51 W E c April 1 1924.

BRAKE SHOE Filed June 22; 1923 2 Sheets-Sheet l April 1 .1924.

C. D. PETTIS BRAKE SHOE Filed June 22. 1925 2 Sheets-Sheet 2 I PatentedApr. 1, 1924.

CLIIETON D. 'PETTIS, OF NEW YORK, N. Y.

BRAKE SHOE.

v Application filed June 22, 1923. Serial No. 647,045.

,"To all whom may concern:

Be it known that I, CLIFTON D. Pnrrls, a citizen of the United States,residing at the city of New York, county andState of New York, haveinvented certain new and useful ".Improvements in Brake Shoes, of whichI do declare the following to be a full, clear, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

"T The present invention relates more particularly to that class ofbrake shoes for railway cars, in which the body of the shoe isreinforced or strengthened at its back, and the object of the inventionis to provide "an improved construction of end lug, which co-operateswith some suitable form of center lug, in holding the brake shoe inproper position upon the brake head. I

The invention consists in the improvements hereinafter described,illustrated in the accompanying drawings andjparticularly pointed out inthe claims at 'the'end of this specification. V

Figure 1 is a plan view of one end of a brake shoe embodying myinvention. Figure 2 is a View in' vertical section on line 22 of Fig. 1.Figure 3 is a plan view of a portion of the back of'the shoe with theend lug removed. Figure 4::is a view of the blank fromv which the endlug will be formed. Figure5 is a plan view of the-finished end lug.Figure 6 is a view in elevation of the end lug looking towards the endof the shoe. F igure? is a view similar to "Fig. l but showing amodified form of the invention. Figure 8 is a View similar to Fig. 2 butshowing the back plate with a T- shapecl transverse opening. Figure-9 isa view'in central vertical section through Fig. 7. Figure 1.0 is'aviewof the blank from which'the modified end lug is formed. Figure 11 is aplan view of the modified end lug. Figure 12 is a view in elevation ofthe end lug looking towards the end of the shoe. I have not deemed itnecessary in the accompanying drawings to illustrate an entire brakeshoe, as. my invention pertains to the end lug portion "only of theshoe. In an application filed by me in the United States "Patent- OfliceSeptember 2, 1922, Sr. 'No.

585,906, which has matured into Patent No. 1,470,478, October 9, 1923,there is shown a type of brake shoe for use in connection with which myinvention is particularly well adapted.

the drawings.-

The brake shoe is shown as'comprising a cast metal body A and apan-shaped reinforcing member B. Preferably the member B comprises aductile metal back plate provided at its sides and ends (one end onlybeing shown) with integral walls, preferably of expanded ,or reticulatedmetal,

shoe.

In the form of the invention illustrated upon sheet 1 of the drawings,my improved end lug is preferably metal blank of the shape shown in Fig.4 of The finished end lug comprlses a channel or box-like body adaptedto extend transversely of the shoe, this body which serve to strengthenthe body of. the

formed from a sheet having upon its sidenearestthe center of Y the shoeupstanding, inwardly projecting walls that serve to center the brakeshoe upon the brake head. To form the finished lug, the sheet metalblank of the shape shown in Fig. 4 of the drawings, is bent upon thelines 10 and lltolorm the top C and the front or outer and rear or innerwalls D and E of -the luggandthe blank is bent upon the lines 12 and 13to form the end walls F and G of the walls are used) form the inwardlyextending part H, and is bent upon the upstanding centering walls I andJ. When body when end ;is bent upon the line 14 to lines'15 and 16 toform the,

the blank is thus bent, thelug will assume the shape shown in Fig. 5 ofthe drawings. To enable the upstanding walls I and J to be bentupwardly, slits 17 and 18 are formed in the blank. I

In order that the finished ing may be attached to the brake shoe,

vided a number of flanges or tongues adaptthere are proed to extendbeneath and-interlockwith the reinforcing back plate of the shoe. Tothis end, the wall D-is provided with a flange d, the end walls F'and Gare provided re-v spectively with flanges f and 9;,and the part H isprovided with a flange hi'bent at right angles thereto.

In applying the improved end lug shown upon sheet 1 of the drawings to abrake shoe, the reinforcing back plate B isprovided with a plurality ofslots 20, 21, 22

and23, the slots 20 and 21 being adapted to admit respectivelythe'flanges f and g at the bottoms of the end Walls of the lug, whilethe slots 22 and 23 admit respectively the flangesed and h of the lug.When the flanges have been inserted through the sevpreferably ofv theshape flowing of the cast metal about and 11 to form the top and is bentupon the lines adapted to be that when the cast metal comprising the Aor" the shoe is united to the reinback in the casting operation, the theflanges back plate body forcing that attach the end lug to the willeiiectively aid in holding these flanges in interlocked. relation withthe back plate.

In the modification of my invention illustrated upon sheet 2 of thedrawings, the end lug is made from a sheet metal blank, shown in Fig.10. To form the finished end lug from such a blank, the blank is bentupon thelines 1O C and front or outer and rear or inner walls D and E;it is also bent upon the lines 12*- and 13 to form the end walls F andG; is bent upon the line 14 to form the inwardly extending part H, and16 to form the upstanding centering walls I and J. Slits 17 and 18 areformed in the blank to permit the walls I. and J to be bent upwardly.

To form the flanges for lug to the back of the shoe, the blank 1s bentupon the line 19 to form the long flange cl, upon the lines 19 to formthe flanges 6, upon the lines'19 and 19 to form the flanges f and'g, andin this form of the invention, the part H is formed with a flange orextension hi adapted to interlock with the back plate of the shoe, aswill presently appear. The blank is slitted betweenthe flanges e andwalls I and J.

The end lug last described is especially used in connection with a backplate B adjacent the end of which is formed a transverse opening(preferably a T-shaped opening) adapted to receive the body'ot the lugand the upstanding centering walls I and J.

Before the cast metal body A is poured into the pan-shaped back or shellof the shoe, the end lug will be placed within the transverse opening 25of the back plate E, as shown in Fig. 7 of the drawings, and when insuch position, the flanges d, 03f, g

and the extension h. will serve to securely hold the end lugin-position. The cast metal forming the body of the shoe will flow aboutthe several attaching flanges and insure the interlocking of theseflanges with the reinforcing backplate of th shoe. 7

By reference moreparticularly to Fig. 9 of the drawings, it will beseenthat when the cast metal is poured within the panshaped reinforcing backor shell of the shoe, such metal will flow into the box-shaped .1 bodyof the lug, forming a cast metal part attaching the a that will serve toreinforce the body of the end lug.

While I have described what I regard as the preferred embodiments of myinvention, it will be understood that the details above described may beparture from the scope of the invention and that features of the.invention maybe employed without its adoption as an entirety.

Having thus described. my invention, what I claim as new and desire tosecure by Letters Patent is 1. The combination with a brake shoe, of anend attaching lug comprising a channel or box-like body extendingtransversely of the shoe and provided with integral flanges forattaching the lug to the shoe.

2. The combination with a brake shoe, of an end attaching lug formedfrom ductile metal and comprising a channel or box-like body having'i'ront, rear and end walls and provided with flanges for attaching thelug to the shoe.

3. The combination with a brake shoe, of an end attaching lug comprisingan inverted channel or box-like body extending transversely of the shoe,said body having side and end walls provided at their edges with flangesfor attaching the lug to the 1 shoe.

4. The combination'with a brake or box-like body extending th shoe andhaving upstanding, inwardly projecting j'c'enterin'g walls, and flangesfor attaching the lug to the shoe.

5. The combination with a brake shoe, of an end attaching lug comprisingan invert= ed channel or box-like body extending transversely of theshoe and having u'pstanding, inwardly projecting centering walls andhaving flanges integral with said body for attaching the lug to theshoe.

6. The combination with a brake shoe,'of an end attaching lug comprisinga channel or box-like body extending transversely of the shoe, the innerwall of said body having integral therewith an inwardly extending partprovided at its edges with upstanding centering walls.

7. The combination with a brake shoe, of an end attaching lug comprisingan inverted channel or box-like body extending transversely of the shoe,the inner wall of metal and comprising an inverted channel or box-likebody having front, rear and end walls, the front and end walls beingformed with attaching flan es, and having formed varied without deshoe,of anend attaching lug comprising a channel" transversely of said bodyintegral with its rear wall an inwardly extending part provided at itsside edges with upstanding centerin walls and provided at its end withan attaching flange.

9. The combination with a brake shoe having a reinforcing back, of anend lug having a transversely extending channel or box-likebody providedwith flanges bent to engage the inner side of said back plate.

10. The combination with a brake shoe having a reinforcing back providedadjacent its end with a transverse opening, of an end lug having atransversely extending body arranged within said opening, said bodyhaving flanges for holding the end lug in place.

11. The combination with a brake shoe having a reinforcing back providedadj acent its end with an opening, of an end lug comprising atransversely extending inverted channel or box-like body located at saidopening and having flanges for holding the end lug in place.

12. The combination with a brake shoe having a cast metal body and areinforcing back provided adjacent its end with an opening, of an endlug attached to the back at said opening, the cast metal of the brakeshoe body extending into said lug.

verse T-shaped opening, of an end lug comprising a transverselyextending, inverted box-shaped body located within said opening, saidlug having an inwardly extending part provided with upstandin centeringwalls and havingflanges for holifing the end lug in place, the castmetal of the shoe body extending into said lug.

15. The combination with a brake shoe having a reinforcing back providedadjacent its end with a transverse opening, of an end lug comprising aninverted channel or box-like body having flanges to engage the back ofthe shoe and having an inwardly extending part provided with upstandingcentering walls and with a flange to engage the back of the shoe.

- CLIFTON D. PETTIS.

